<template>
	<div class="list" ref="wrapper">
		<div class="content">
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">
							{{this.$store.state.city}}
						</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="handleCityClick(item.name)">
						<div class="button">
							{{item.name}}
						</div>
					</div>
				</div>
			</div>
			<div class="area" v-for="(item, key) of this.cities" :key="key" :ref="key">
				<div class="title border-topbottom">{{key}}</div> 
				<div class="item-list">
					<div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"
						@click="handleCityClick(innerItem.name)"
					>
						{{innerItem.name}}
					</div>
				</div>
			</div>
		</div>
	</div>
</template>
<script>
import BScroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default{
	name: "cityList",
	props:{
		hotCities: Array,
		cities: Object,
		letter: String
	},
	methods: {
		handleCityClick (city) {
			this.changeCity(city)
			this.$router.push("/")
		},
		...mapMutations(['changeCity'])
	},
	computed: {
		...mapState({
			currentCity: 'city'
		})
	},
	mounted () {
		this.scroll = new BScroll(this.$refs.wrapper)
	},
	watch: {
		letter () {
			if (this.letter){
				const element = this.$refs[this.letter][0]
				this.scroll.scrollToElement(element)
			}
		}
	}

}
</script>
<style lang="stylus" scoped>
	@import '~styles/varibles.styl'
	.border-topbottom
		&:before
			border-color #ccc
		&:after
			border-color #ccc
	.border-bottom
		&:before
			border-color #ccc
	.list
		position absolute
		top 1.58rem
		left 0
		bottom 0
		right 0
		overflow hidden
		.title
			line-height .54rem
			background #eee
			padding-left .2rem
			color #666
			font-size .26rem
		.button-list
			padding .1rem .6rem .1rem .1rem
			overflow hidden
			.button-wrapper
				float left 
				width 33.33%
				.button
					margin .1rem
					padding .1rem 0
					text-align center
					border .02rem solid #ccc
					border-radius .06rem
		.item-list
			.item
				line-height .76rem
				padding-left .2rem	
</style>